<template>
<ul>
  <li :style="{opacity}">欢迎学习</li>
  <li>news001 <input type="text"></li>
  <li>news002 <input type="text"></li>
  <li>news003 <input type="text"></li>
</ul>
</template>

<script>
export default {
  name: "News",
  data() {
    return {
      opacity: 1
    }
  },
  activated() {
    console.log("New组件被激活了")
    this.timer = setInterval(() =>{
      this.opacity -= 0.01
      if (this.opacity <= 0) this.opacity = 1
    },16)
  },
  deactivated() {
    console.log("News组件失活了")
    clearInterval(this.timer)
  }
}
</script>

<style scoped>

</style>
